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Intel Core i5 & i7 Sandy Bridge Overclocking and Feedback

Well I got another hardcrash at 4.7GHz 1.375Vcore.
And this was after passing 20 Burn tests...

Just passed 50 Burn tests on 4.5GHz, same voltage.

Going to up to 4.7 again and run 130%, see if that makes a difference.
 
Undead46 said:
Well I got another hardcrash at 4.7GHz 1.375Vcore.
And this was after passing 20 Burn tests...

Just passed 50 Burn tests on 4.5GHz, same voltage.

Going to up to 4.7 again and run 130%, see if that makes a difference.
Click to expand...
are the crashes happening at idle? theres a big idle crash bug with stable oc's with this chip/chipset. havent read about a fix yet, though one might be burried in the 10 pages of this thread
 
My 4.7GHz passed 50 burn test, then a crash later on..

Set everything back to stock, and had another crash overnight.

I'm just going to replace the PSU and see if that makes a difference.
 
sounds like a VTT crash probably need more IMC/vtt volts
 
The two most common causes of idle crashes are insufficient volts and pushing the memory too far for the IMC. Try lowering memory first and see if it crashes for a few days. I've found playing a dvd usually sets it off. If it's the chip, try bumping the voltage a notch and waiting to see if it crashes. It already passed the high load stress tests, so low loads are where you should be testing now. LLC and offsets make for a very different power environment between idle and load.
 
Why would I need to up my VTT or lowering my memory if it's all at stock and still having a hard crash?

Memory passed 2 memtest86 tests.
 
This isn't even a challenge. :\

Capture001.jpg


NH-D14, ambient is 24.7C.

Capture002.jpg


This is with a cheap $129 Biostar TP67B+.

5.0Ghz time.
 
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That seems to be the highest this board will go. 51 wont boot, 101bus wont boot. lol
 
WHat does it say on the box for week, etc? volts are fairly low, hopefully it pans out long-term.
 
Priming 4.8 @ 1.35v overnight. I'm a big fan of 5GHz, but I don't want to use anything over 1.35v for 24/7. 5GHz may need around 1.4v to be 100% stable, which I'm not OK with. Especially since it gets to 110F+ during the summers here. 4.8 will do just fine at 1.35v. :) Nighty night!
 
These are impressive clocks/voltages. Those chips are killer!
 
Awesome clocks and voltages!

I'm itching for my chip to arrive! the 2600k seems like a better overclocker overall compared to the 2500k despite having HT on.
 
Very nice Johnny, findings with bios settings or was it just a case of auto working well?
 
Thought I'd chime in. I have 3 systems, and they're all a little different:

Gigabyte UD4 with 2600K
All energy saving stuff turned off
1.32v for 4.6GHz (ram at auto)

Asus P8P67 with 2600K
Energy saving stuff turned on
1.352v for 4.6GHz (ram at auto)

Asus P8P67 Pro with 2600K (system specs)
Energy saving turned on
Overclocked through XMP then CPU core bumped till stable
1.365v for 4.4 with 1866 RAM

UD4 is a horrible board when you crash compared to the Asus, but once you got it sorted I feel it's the most sturdy motherboard of the lot. Main rig's mobo was unstable with my ram at any speed unless I selected XMP. Higher temps and lower stable OC for little performance gain imho.
 

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johnnyfiive said:
It's johnnyfiive stable, thats all that matters. :D
Click to expand...

:laugh: Now how about those bios settings :D

Kiex, cheers for those. I haven't had one bsod yet on my standard P8P67 even when an overclock has been unstable it has just stopped responding. Hope I'm not tempting fate :)
 
I'll dump out the entire BIOS and post it here Life. I'm still at work and won't be able to do the BIOS dump until later tonight. :P
 
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